oslo.policy expects the key project_id, not tenant_id anymore. This was
causing the GET /v2/dataframes policy check to fail:
$ openstack --rating-api-version 2 rating dataframes get
{"message": "You are not authorized to perform this action"} (HTTP 403)
In the v1 API, the storage:list_data_frames operation was not affected
because it uses project_id.
Change-Id: Ie4aa6a21e3829223aab0f91d809e311e0f0318cb
Story: 2009879
Task: 44618
(cherry picked from commit 32bf128b81)